I think that i got the answer for number (30) and i think that the answer is (c) because it's George Washington and James Madison.
hope it help
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ANSWER
<em>Russia</em>
HERES HOW:
<em>On March 30, 1867, the United States reached an agreement to purchase Alaska from Russia for a price of $7.2 million. The Treaty with Russia was negotiated and signed by Secretary of State William Seward and Russian Minister to the United States Edouard de Stoeckl.</em>
<em>I DIDN'T WRIGHT THIS SO THIS IS NOT MINE BUT READ THIS IT SHOULD HELP :)</em>
The main reason why we know more about Hammurabi's Code than other early forms of law is because Hammurabi's Code was the first (or at least one of the first) codes of law to be permanently inscribed on stone instead of issued on paper or through word of mouth.